But which one?

As some of you may have noticed, I recently moved to New Mexico. A very gun friendly state. As a result of this move and the friendliness of the gun laws here, a whole myriad of options are available to me. AK-47? Cheap and readily available. AR-15? Take your pick. I have decided that my first, but by no means my last, gun purchase in this Land of Enchantment will be one that would be illegal to own in my previous state of residence, though I have not decided on which one.

I am open to suggestions...